Reducing fischer-tropsch catalyst attrition losses in high agitation reaction systems

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873861

Singleton, Alan H ^[1]; Oukaci, Rachid ^[2]; Goodwin, James G ^[3]

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1. Baden, PA
2. Gibsonia, PA
3. Cranberry Township, PA

A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a .gamma.-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a .gamma.-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5. In another aspect, the catalyst preferably comprises cobalt on a .gamma.-alumina support wherein the cobalt has been applied to the .gamma.-alumina support by totally aqueous, incipient wetness-type impregnation. In another aspect, the catalyst preferably comprises cobalt on a .gamma.-alumina support with an amount of a lanthana promoter effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a .gamma.-alumina support produced from boehmite having a crystallite size, in the 021 plane, in the range of from about 30 to about 55 .ANG.ngstrons. In another aspect, the inventive method of producing an attrition-resistant catalyst comprises the step of treating a .gamma.-alumina support, after calcination of and before adding catalytic material to the support, with an acidic solution effective for increasing the attrition resistance of the catalyst. In another aspect, the inventive method of producing an attrition-resistant catalyst support comprises the step of treating calcined .gamma.-alumina with an acidic, aqueous solution effective for increasing the attrition resistance of the .gamma.-alumina.

• Research Organization: ENERGY INTERNATIONAL INC
• DOE Contract Number: AC22-92PC92108
• Assignee: Energy International Corporation (Pittsburgh, PA)
• Patent Number(s): US 6262132
• OSTI ID: 873861
• Country of Publication: United States
• Language: English

Related Subjects

reducing
fischer-tropsch
catalyst
attrition
losses
agitation
reaction
systems
method
hydrocarbon
synthesis
processes
conducted
producing
attrition-resistant
produced
support
inventive
comprises
step
reacting
gas
presence
aspect
preferably
gamma
-alumina
including
amount
titanium
effective
increasing
resistance
treated
calcination
acidic
aqueous
solution
ph
cobalt
applied
totally
incipient
wetness-type
impregnation
lanthana
promoter
boehmite
crystallite
size
021
plane
range
30
55
ang
ngstrons
treating
adding
catalytic
material
calcined
attrition resistance
catalyst comprises
synthesis process
hydrocarbon synthesis
catalyst support
fischer-tropsch catalyst
aqueous solution
synthesis gas
preferably comprises
catalytic material
acidic aqueous
acidic solution
inventive method
support including
attrition losses
agitation reaction
catalyst attrition
support comprises
comprises cobalt
reaction systems
crystallite size
incipient wetness
resistant catalyst
preferably comprise
losses comprises
alumina support
/518/502/